Hey all. This is my first attempt to convert an inexpensive gun into a more effective home defense device. Have the tactical stock I want on order. Now I move forward and need your help. Flashlight? Change barrel (stock is 18.5")? Sights? Don't care about everyone's advice on 00 Buck going through walls. That just means it goes through people and that's what will be in my gun. So learn me up from there please.